Miter-box.



v PATENTEDOCT. 23, 1906. w. J. PARSONS. MITBR BOX.

APPLICATION FILED 1111111211905.

PATENTED OCT. 2a, 1906.

w. J. PARSONS.

MITER BOX. APPLIOAIION FILED JUNE 2, 1905.

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No. 834,073. 1 53mm) OCT. 23, 190%: I w. J. PARSONS.

MITER BOX..

APPLIO ATIOH FILED JUNE 2 1905.

' 3 SHEETS-SHEET 3.

l of Monta e, in the county of Franklin and State of Boxes, of which thefol tion UNITEDSTATES PATENT OFFICE. v I

WILLIAM J. PAR-SONS, OF MONTAGUE, MASSACHUSETTS, ASSIGNOR, BY M-ESNE ASSIGNMENTS, ro MILLERS FALLS COMPANY, or MILLERS I FALLS, MAssAonusm'rs, A CORPORATION or MAssAoHps r'rs.

IVIITER-BOX.

Specification of Iatters Patent.

Patented. Oct. 23, 1906.

Tau/ll .uihom it concern: a I

. Be it .known that 1,.W1LLLAM J PARSONS,

assachusetts, have invented certain new and useful Improvements in Miterowing' is a specifica- This invention relates to the type miter I boxes in which the work is supported by a horizontal bed-or table andvertical backrests cooperating therewith, and the saw is supporte ,by vertically movable guides mounted on a swing-bar which is pivoted to the sup ortin frame, the swing-bar and saw beinga a to to stand at various angles rela tively to t e work supported by the table, so as-to sever the work at any angle desired.

The invention has for its object to improve the construction of the machine in various articulars, ,said improvements including, iirst, a formation of the bed or table whereby horizontal slipping of the work on thetable is reventedysecondly, improved means for Ice ing the SW1 bar in any position to which it may be a justed and permitting'extremel minute adjustments; thirdly, im-

means for supporting the saw in its fii'ove fghest position when not in use, and,

fourthly, means for varying the length of the swing-bar and improvements in supilemem rious positions.

Theinventlon consists in the several improvements which I will now proceed to describe and claim.

In the drawings forming a part of two view of the miter-box embodying my invention, the swin bar and saw being shown at one extreme'o their adjustment. Fig. 2 represents a transverse section through the frame of the machine midway between its ends and an elevation of the parts beyond the plane on which the section 1s taken. Fig. 3 represents a top plan view of the machine, the swing-bar being shown midway between the two extremes of its movement; Fi 4 represents a section on line 4 4 of Fig. 2. Fig. 5 represents a section on line 5 5 of Fig. 3. Fig. 6 represents a section on line 6 6 of Fig. 2. Fig. 7 represents a view similar to Fig.6, showing a different adjustment. Fig. 8 represents an end elevation of the machine. Fig.

' g-le piece.

thisspecification, Figure 1 represents a perspec 9 represents an elevation showingthe outer end of the swing-bar and one o the sawguides. Fig. 10 represents a ma nified secltional view of a portion of one o the tableisectlons. Flg. 11 represents asection on line 11 11 of Fig. 3.

In the drawings, 12 represents ing-frame, having the vertical back-rests 13 13, which support the work against backthe support-- ward horizontal displacement, the said frame and rests being preferably cast in a sin- The frame is formed to support the horizontal bottom pieces or table-sections 14 14,'which stand at ri ht angles .with' the back-rests and support t e work vertically; The table-sections are of steel and are provided .on their upper surfaces with numer-l ous small 's urs 16, Fig. 10, to prevent the sli ping of t e work, said spurs being preferab y formed by striking up portions of the metal of the sections to form upwardly-projecting points which are preferably so small as t; be free from liablhty of marring the wor y 17 represents the horizontally-movableswing-bar, which is connected with the frame by a vertical stud 18, having a tapered head.

- 19, fittingla tapered socket in the swing-bar,

the stud aving a threaded portion engaging an internally-threaded socket in the supporting-frame. and prevented from rotating by a screwthreaded locking-stud 20, engaged with the socket which receives the'stud 18 and bearing on the, upper end of the latter to cause its thread to ind on the internal thread of the socket.

The ta 'ered head ofithe stud 18 has a The stud is locked to the frame squared s ank 21, adapted to be engaged by a wrench to adjust t e stud upwardly to compensate for wear, this u ward adjustment being permitted by slig tly retracting the locking-screw 20.

The supporting-frame side a segmental rib 22, Figs. 1 and 5, which is concentric 'with the stud or center on which the swing-bar moves, and. is provided 24 on a latch 25, which is pivoted at 26 to the swing-bar 17. Said latch is normally pressed upwardly by a s ring 27 to cause the has on its under I00 with notches23, adapted to engage a detent 6, it is out of contact with the arm 31, and

the detent is free to enter a notch 23. Ahalfrotation of the rock-shaft depresses the cam 28' and causes it to depress the arm 31 and the latch thus withdrawing the detent from the notch, as shown in Fig. 7. I,

Meansare provided for frictionally locking the swing-bar at any point not provided for by the notches 23 and detent 24, so that extremely minute adjustmentsof the swingbar-may be effected. Said means in this embodiment of my invention are as follows: 33 represents a fixed segmental rib formed on the supporting-frame. 34 represents a bar or shoe having a. groove in its under side, said groove fitting on the upper edge of a-rib 35, formed on the swing-bar 17. One end of the shoe 34 projects over the rib 33 and is ada ted to e drawn into close frictional bin 'ng contact therewith by means of a headed 'stud 36, Fig. 5 afiixed to the shoe 34 and projecting downwardly therefrom. A

short lever 37 is engaged with the head 38 of the stud 36 and projects therefrom under the rock-shaft 29. Said rock-shaft is provided with a cam 40, which projects in the opposite direction from the latch-dc re'ssing cam 28, and is adapted to enga e t e lever 37 when the rock-shaft is turne todepress the said cam 40. The depression of the cam 40 also causes a depression of the .lever 37,. stud 36,

' and the end of the shoe 34, which is located over the rib 33. The shoe is thus brought into close frictional or binding contact with the rib, so that the swing-bar is frictionally locked to the supporting-frame by the 006peration of the shoe 34 and the segmental rib 33. The length of the segmental rib 33- is such that the swing-bar may be locked,as last described, at any point between-theextremes of its movement, provision being thus made for extremely minute adjustments of the swing-bar. The swing-bar 17 has a slidin extension 171, provided with a longitudina slot 172, Fi 5, throu h which passes ab'olt 173, exten ing throug an orice in the swing-bar 17. 174 represents a nut en a ing'a thread on the lower portion of the boTt 17 3, said nut having a handleio'r lever 175, by which it may be turned to engage its upper end with the under side of the swing-bar 17 to cause the head of said bolt to bind upon and secure the extension 171 at any desired adjustment.

The swing-bar is provided at its opposite ends with vertical sockets 42 43, in which are vertically movable the uides 45 46, which support the saw 47. T e rear socket 42 is formed directly upon the swing-"bani? which the guide moves, and thus limit the downward movement of the guide and the saw and revent contactof the saw-teeth with meta lic parts-below it. To each of the vertically-movable guides is pivoted, by the screw 50, a latch-bar 53, having a-longitudinal slot 55,- the lower portion of which is, curved and offset to form a shoulder 56, the

curvature and offset ortion being so arranged that when the shoulder is in contact with its support' (hereinafter described) the latchbar will be held in vertical alinement with the guides. To each of the guiding-sockets 42 43 is afiixed a headed screw or stud 57, adapted to engage the shoulder-56 of the latch bar 53 when the saw is fully elevated, as shown in Fig. 2, the shoulders 56 hearing on the studs 57 and supporting the saw in its raised position.

As will be seen, the latch-bars 53 are substantial'duplicates, being mounted in such manner'that they will be en aged withor disengaged from the studs 57 y movements in a similar direction. Hence there is no liability of mistake in the assemblage of the arts nor-is there a requirement of the manuacture. of latch-bars differing from each other in construction, and as each latch-bar is provided with a push-piece 59, (hereinafter described,) which extends across the vertical'. plane of theback of a saw in the guides, there is no requirement of the services of an expert in assembling the parts, as they can necessarily be placed in but one position with respect to the latch-bars and their mounting on the guides.

Each latch-bar 53 is provided at its upper end with a forwardly-projecting extenslon 58, having a push-piece 59 arranged so that the pressure of the operators thumb a plied to the push-piece will swing the late bar on its pivot sufficiently to disen age the shoulder 56 from the stud 57, and t us permit thedownward movement of the latch-bar and the guide with which it is connected.

The latch-bars 53 and the studs 57 cooperating therewith are similar to the corresponding parts shown in the Goodell patent, No.

544,092, excepting that in this case the latchbars are ind e endent of each other and are provided with the forwardly-projecting extensions 58 instead of being connected as shown in said patent.

The advantage. of the independent latch- Ioo ereon gives each latch-bar a tendency to swing in u der the direction required to engage the sho 56 with'the stud 57 whenever the latch-bar is raised to the required height, so that the saw is automaticallyarrested in its raised p I sition.

absence of connection between them enables the saw to bereleased and allowed to gravitate by pressing backwardly onthe, thumbpiece of the rear latch-bar with one hand, the,

other hand at the same timegrasping the sawhandle. The rearlatch-baristhusdisengaged from the accompanying stud 57, so that the outer end of the saw drops.

- near the handle end is caused to bear 'a ainst and raise the thumb-piece of the front atchbar, said thumb-piece extenaingacross the than the connecting-bar shown'in'the'Goodell patent, the'latter. being located beside the ack ofthe saw and below its upper "edge, so that 'it is comparatively inaccessible; :Fur-'.

thermore, the fact that the thumb-piece 59 s of each latch-bar is'located on the same side of the guide in each case and the fact that'the opposite'side of ,the guide is free from any projecting portion which would form an obi struction enables the guides to'be released independently, therelease of the front guide permitting the .front end of the saw to'drop downward without releasing the rearguide, thereby permittingof the use of thesawblade as an indicator to. accurately position the swing-bar when it is to be adjusted to a mark being positioned re tionary end of the swing-bar.

mark drawn across the upper surface of the material to be cut, the olpposite-endhof the ativel to t e stahis is of es pecial advantage where the material is of such a width as to extend over the guide 68, in which case the swing-bar is released, the front thumb-latch operated, thereby releasing. the front guide, whereu on the swing-bar is movedv on Its pivot unti the saw-blade is over the mark which had been made, after which the swing-bar is locked by either the latch. 25 of the frictional lock, as-the case may be. A release of the rear guide then ermits the saw to drop into proper position or use. As will be readily understood, the inclination of the saw when the front saw- The back of the i saw is thus inclined, and the' portion thereof guide only is released revents any liabilityof the top surface of .the material being marred, as only that point on the blade in an adjustable stop-stud 60, which may be Theindependence of the latch-bars or the movement of the saw at a higher point than that provided for by the-stop-finger'52.

"Transverse slots 62 are formed in the bed ?portion of the machine, and vertical openlugs 63 are formed in the-back-rests 13, said openings coinciding with the slots 62 64 64 represent vertical studs or work-rests, which are movable in the slots 62, said rests being j of greater diameter than the Width of the slots, so thattheir lower ends bear on the upper surfaces of the table-sections'at opposite sides of the slots;

The rests 64 are provided in'their lower portions with internally-threaded sockets which engage locking-screws 65, the heads of which bear upon the. lower edges of the slots formed in the frame of .the machine. When the screws 65-are tightened, they draw the lower ends ofthe rests 64 firmly against the up er surfaces of the table sections, and thus the rests firmly in any desiredposition.

- When the rests are not re uired for use, they may be moved through t e openings 63 to the back sides of the back-rests 13, where they are entirely out of the way. a p

In Fig. 1 I show one method .of utilizin therests 64, one of said rests being adjusted to bear against the outeredge of a' iece' of work whose inner edge bears against tiie backrests 13, while the other rest is employed to secure to one of the table-sections 14 a slotted length-gage 66, whose inner end 67 is bent upwardly and bears against one endof the work.

. 68 represents a segmental indexlate affixed to the frame of the machine an cooperatingwith the shoe 34.

It will be observed that the supportingframe has an angular opening between the inner ends of the table-sections and that the rib 35 on the swing-bar projects upwardly into said 0 ening, the body of the bar being located below the frame. The rib is provided with a screw-threaded stop-stud 72, whichextends through a tapped orifice in'the rib and projects from opposite sides of the latter .in ositlon to abut against the sides of the sai opening and limit the movement of the swin -bar in eachidirection, the said stud being ar ljustable.

I claim- 1. A miter-box comprising a frame having frame an carrying saw-gui e sockets, sawides movable in said sockets and normally ih dld locked against movement therein, and

independent means for releasing either of said guides, said means being disposed relatively to each other in such manner as to-permit downward jmovement -of both uides when the rear guide is released and a iownward movement/of but'one of the guides when the other guide is released. g

2. A miter-box-comprisinga 'frame 'having work-supports, a swing-bar 'ivoted'on sa'i frame an carrying'saw-gui e sockets,vsawides movable in said sockets and normally eld locked against movement -the'rein,

means for limitmg the movement of said guides in the sockets, and inde endent means for'releasing either'of said gui es, said means being disposed relativelyto each other in such" manner as to permit downward movement of both guides when the rear guide is released and a downward movement of but one of the guides when the other guide is released. a

3. A miter-box comprising a frame havin work-supports, a swing-bar ivoted on sai frame and carrying saw-gui e sp ckets, sawides movable in said sockets, and independent latch-bars for normally locking said guides against movement in the sockets, said bars each having releasin means, said releasing means being dispose relativel to each other in such manner as to permit ownward movement of both guides when the rear guide is released and adownward movement of but one of the guides when the other guide 4. A miter-box'comprising a frame havin work-sup orts, a swing-bar ivoted on sai frame an carrying saw-gm e sockets, sawguides movable in said sockets, and inde-' pendent latch-bars for normally locking said guides against movement in the socketsg'said bars each having a thumb-piece, one of said thumb-pieces extending across the vertical plane of the back of a saw in said guides, and

arranged to release its latch-bar automatically when the other latch-bar is released, a release of the first-mentioned latch-bar releasing but one of the guides.

5. A miter-box comprising a frame having work-supports, a swing-bar ivoted on sai frame an carrying saw-gui e sockets, sawides movable in said sockets, andindependentlatch-bars for normally locking said guides against movement'inthe sockets, said are each having a thumbiece extending across the vertical plane of t e back of a saw injsaid ides, and occupying the same relative' position to the respective guides, the o posing side of the gui es being free fromobstructing means.

6. A miter-box comprising a frame havin work sup orts, a swing-bar ivoted on said frame an carrying saw-gui e sockets, sawguides movable in said sockets and normally el'd locked against movement therein, looking means for said swing-bar, and independ-' ent means for'r'eleasing either of said guides, said means being disposed relatively to each other insuch manner as to emit downward movement of both guides w en the rear guide is released and a downward movement of but one of the guides when the other guide is released.

7. A miter-box comprising a frame having work-supports, an extensible swing-bar pivoted on said frame and carrying saw-guide sockets, saw-guides movable 1n said sockets and normally held locked against movement therein, locking means for said swing-bar, and inde endent means for releasing either of said gui es, the release of the front guide permitting but one guide to move downwardly, whereby the saw may serve as an indicator, the release of the other guide, when both guides are locked, releasing both guides.

In testimony whereof I have afiixed my signature in presence of two witnesses.

- WILLIAM J. PARSONS Vllitnesses:

GEO. W. NIMs, Lrzzm STRAOHAN. 

